• Open Access

Dalitz plot analysis of B0D¯0π+π decays

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. D 92, 032002 – Published 7 August 2015

Abstract

The resonant substructures of B0D¯0π+π decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0fb1 of pp collisions collected by the LHCb detector is used. The branching fraction of the B0D¯0π+π decay in the region m(D¯0π±)>2.1GeV/c2 is measured to be (8.46±0.14±0.29±0.40)×104, where the first uncertainty is statistical, the second is systematic and the last arises from the normalization channel B0D*(2010)π+. The π+π S-wave components are modeled with the isobar and K-matrix formalisms. Results of the Dalitz plot analyses using both models are presented. A resonant structure at m(D¯0π)2.8GeV/c2 is confirmed and its spin-parity is determined for the first time as JP=3. The branching fraction, mass and width of this structure are determined together with those of the D0*(2400) and D2*(2460) resonances. The branching fractions of other B0D¯0h0 decay components with h0π+π are also reported. Many of these branching fraction measurements are the most precise to date. The first observation of the decays B0D¯0f0(500), B0D¯0f0(980), B0D¯0ρ(1450), B0D3*(2760)π+ and the first evidence of B0D¯0f0(2020) are presented.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
10 More
  • Received 8 May 2015

DOI:https://doi.org/10.1103/PhysRevD.92.032002

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2015 CERN, for the LHCb Collaboration

Authors & Affiliations

Click to Expand

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 92, Iss. 3 — 1 August 2015

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 3.0 License. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×